33 52 000 Removing And Installing/Replacing Rear Left Or Right Shock Absorber
Version with Vertical Dynamics Management:
Necessary preliminary tasks:
- Remove rear wheel.
- Tension both coil springs (and leave on vehicle). See 33 53 000 REMOVING AND INSTALLING / REPLACING REAR LEFT OR RIGHT COIL SPRING .
- Version with ride-height control: Deactivate and drain air spring system . See 37 00 100 DRAINING/FILLING AIR SPRING SYSTEM .
Version with Vertical Dynamics Management:
Partially detach rear wheel arch cover . See 51 71 041 REMOVING AND INSTALLING/REPLACING REAR LEFT OR RIGHT WHEEL ARCH COVER .
Detach both plug connections (3) and expose lines up to shock absorber.
- Plug connection for brake pad wear sensor
- Plug connection for pulse generator
Release retainer (1) and remove brake hose (2) from shock absorber (4).
Installation:
When installing the shock absorber, ensure that the holder for the brake hose (2) points to the middle of the vehicle.
Ensure correct seating in guide.
Retainer must be felt and heard to snap into place.
Unscrew bolt (3).
Remove shock absorber (4) from swinging arm and tie back.
Screw must not be used as an aid to installing the shock absorber!
Installation:
Replace screw.
Tighten bolt in normal position .
Tightening torque. See REAR AXLE - TIGHTENING TORQUES .
Do not pull expanding clips with luggage compartment tray out of lashing rail.
Release expanding clips (1).
Press luggage compartment tray (2) to one side.
Installation:
Replace damaged expanding clips.
Unscrew nuts (1).
Installation:
Replace self-locking nuts.
Tightening torque. See REAR AXLE - TIGHTENING TORQUES .
Remove shock absorber if necessary with connecting lines in downward direction.
Installation:
Clean body contact surface for support bearing flange all round.
Refit sealing washer (1).
Replacement:
Modify support bearing . See 33 52 161 REPLACING REAR LEFT OR RIGHT THRUST BEARING FOR SPRING STRUT/SHOCK ABSORBER .
Modify auxiliary damper (1) and protective tube (2) incl. support pot ().
Installation:
Check auxiliary damper (1) and protective tube (2) for damage, replace if necessary.
After installation:
- Activate and fill air suspension system . See 37 00 100 DRAINING/FILLING AIR SPRING SYSTEM .
- Replacement only: Code shock absorber with DIS Tester and check software status
- Replacement only: Carry out vertical acceleration sensor adjustment . See 37 .. ... PERFORMING VERTICAL ACCELERATION SENSOR ADJUSTMENT (VERTICAL DYNAMICS MANAGEMENT) .